A one inch (25mm) badge is roughly the same size as a UK 2p coin or a US quarter, as seen below:

Badges are often called button pins, pins, button badges, pinback buttons: It depends where you are in the world!

Description:

This is a set of brand new 1inch/25mm diameter badges/buttons/pins, each with a rear pin fastening. The set contains a variety of Punk Rock themed badges:PUNK YELLOW & PINKANARCHY SYMBOL1977 ON SCOTTISH TARTANPUNK SKULLSAFETY PINPUNK ROCK ALL STARSThis set is a great accessory for a punk rock fancy dress costume or as a gift for a punk rock fan.